Drill bit for engaging a jack crank



FIG. 1 is a top plan view showing my new design of a drill bit for engaging a jack crank;

FIG. 2 is a bottom plan view of the drill bit for engaging a jack crank;

FIG. 3 is a right side view of the drill bit for engaging a jack crank;

FIG. 4 is a left side view of the drill bit for engaging a jack crank;

FIG. 5 is a front side elevation view of the drill bit for engaging a jack crank, wherein the lines in phantom are for environment only and form no portion of the claimed invention;

FIG. 6 is a right side perspective view of the drill bit for engaging a jack crank;

FIG. 7 is a left side perspective view of the drill bit for engaging a jack crank; and,

FIG. 8 is a cross-sectional view of the drill bit for engaging a jack crank taken along line 8-8 of FIG. 3 to illustrate a depth of a well extending therein. 

CLAIM The ornamental design for a drill bit for engaging a jack crank, as shown and described. 